A convex mirror in a hardware store has a focal length of -0.5m. An elf who is 1.5m tall is standing 4.0m in front of the mirror. Calculate the image distance. 1/f = 1/di + 1/do

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is